pkontkanen@cc.helsinki.fi (12/19/89)
I and my friends are making a little intro. We have already made for example textscroll, starscroll and music but now we have faced a big problem: the vertical blanking interval isn't long enough. We would like to add some nice things such as wavescroll, but screen flickering follows because of the lack of time. We have heard something about Copper interrupt. If it is timed to occur just after last display line, additional time can be gained. That's theory, but how is it done in practice? I think we should use level 3 interrupt, but our playroutine (Soundtracker) uses it too. What should we do? Petri Kontkanen University of Helsinki,Finland